Superior Threads Buttonhole Silk #16/3-ply Hand Embroidery Thread 22 yds on Card; 402 Black 139-01-402 Price is for 1 on Card 22 yards of Superior Threads Buttonhole Silk #16/3-ply 402 Black 139-01-402 Hand Embroidery Thread Buttonhole Silk is made from #16/3-ply Japanese (Tire) Filament Polyester Buttonhole Silk thread is great for heavier-thread applications such as stitching buttonholes on garments, hand embroidery, needlepoint, and hand quilting Colorfast and can be used for beading and stringing pearls Size E (.47 mm in diameter), recommended for hand stitching